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By "Duckworth, William"
The birds of Cumberland : critically studied, including some notes on the birds of Westmorland / by H.A. Macpherson and William Duckworth.
By: Macpherson, H. A. - Duckworth, William
Publication info: Carlisle [England] :C. Thurnam & Sons,1886.
Contributed by: Smithsonian Libraries
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